Sofia Vergara and boyfriend Nick Loeb are engaged, according to online reports.

Loeb, a Florida-based businessman who is the heir to the Loeb, Rhoades & Co. banking fortune reportedly gave the Modern Family actress an enormous engagement ring at her 40th birthday bash in Mexico last night.

Vergara's rep has yet to respond to our request for a comment, but a source for MSN's Wonderwall confirms that Vergara is in fact engaged.

Vergara's pal Fernando Fiore posted a photo on Twitter last night, and in it the starlet is sporting a sizable diamond sparkler on her left ring finger:

twitter.com/FernandoFiore

Vergara was previously married to Joe Gonzalez, and the couple had one child together, son Manolo. Loeb was previously married to blonde beauty Anna Pettersson, but she filed for divorce in October 2009. Vergara and Loeb started dating in February 2010, and despite rumors that they had split last May, things definitely seem to be back on!